Comstock Armory Full Size Plan-B Muzzle Brake, 1/2x28, 5.56, Black Nitride

Comstock Armory Full Size Plan-B Muzzle Brake, 1/2x28, 5.56, Black Nitride

The Comstock Armory MBL-12-22-PW is a full size muzzle brake combining 1/2x28 barrel threads with a Plan-B suppressor-mount interface. Its 5.56 configuration, 17-4 PH stainless steel construction and black nitride finish identify this exact version.

The 2.14-inch body weighs 2.3 ounces and adds approximately 1.5 inches beyond the muzzle. These separate dimensions help distinguish the device's physical size from its contribution to the overall setup.

Shop the Comstock Armory MBL-12-22-PW at BattleHawk Armory for your compatible 1/2x28 setup.

Recoil Reduction and Blast-Baffle Protection

The brake geometry helps reduce recoil and provides a sacrificial surface ahead of a compatible suppressor's blast baffle. The steel body combines those functions with the mounting interface, making the device useful when recoil management and suppressor compatibility are both priorities.

The rotationally symmetric body does not require timing shims. Its black nitride treatment gives the stainless steel a durable, dark finish, while the wrench flats provide a dedicated tool interface.

Compatibility and Configuration

The suppressor-side interface fits compatible 0.900-24 Plan-B adapters, including Comstock LPA, Q Plan-B and Rearden Atlas. Barrel threading, bore clearance and the suppressor's internal space must all suit the intended configuration. The muzzle device does not establish the caliber rating of the suppressor.

This version includes a predrilled pin-and-weld hole. That feature identifies the supplied part; a finished barrel assembly requires its own dimensional and fitment verification by a qualified professional.

Product Specifications

• Manufacturer: Comstock Armory
• Model / Manufacturer SKU: MBL-12-22-PW
• UPC: 850069580087
• Product type: Full Size Muzzle Brake
• Material: 17-4 PH stainless steel
• Finish: Black nitride
• Weight: 2.3 oz
• Barrel threads: 1/2x28
• Mounting system: Plan-B pattern; complete-system fitment required
• Bore compatibility: .223 / 5.56mm
• Overall length: 2.14 inches
• Added length: approx. 1.5 inches

Frequently Asked Questions

Choose the Comstock Armory MBL-12-22-PW at BattleHawk Armory for a correctly matched full size muzzle brake and Plan-B mounting interface.